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Code Issues Releases Wiki Activity

Add untested support for scope trace grabbing

Browse Source
master
Timothy Pearson 13 years ago
parent cb05310c2f
commit 8d3c1358ee
3 changed files with 189 additions and 2 deletions
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23
servers/gpib_server_lin/src/gpib_conn.cpp
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@ -267,6 +267,27 @@ void GPIBSocket::commandLoop() {
writeEndOfFrame();
}
}
else if ((m_instrumentCommand == "GETCHANNELTRACE")) { // Want channel trace
TQ_INT32 value;
ds >> value;
TQ_INT32 traceLength;
traceLength = scope_get_channel_trace(value, m_serverParent->m_scopeType.ascii(), m_serverParent->m_scopeDeviceSocket);
if (traceLength > 0) {
int i;
TQFloatArray traceData;
traceData.resize(traceLength);
for (i=0; i<traceLength; i++) {
traceData[i] = scope_raw_trace_data[i];
}
ds << TQString("ACK");
ds << traceData;
writeEndOfFrame();
}
else {
ds << TQString("NCK");
writeEndOfFrame();
}
}
else if (m_instrumentCommand == "SETVOLTSDIV") { // Want to change volts per division
TQ_INT32 value1;
ds >> value1;
@ -461,7 +482,6 @@ void GPIBSocket::commandLoop() {
}
}
else if ((m_instrumentCommand == "GETSPECTRUMTRACE")) { // Want SA trace
ds << TQString("ACK");
if (commanalyzer_get_spectrum_analyzer_trace(m_serverParent->m_commanalyzerType.ascii(), m_serverParent->m_commanalyzerDeviceSocket) == 0) {
int i;
int tracelen = commanalyzerTraceLength(m_serverParent->m_commanalyzerType.ascii());
@ -470,6 +490,7 @@ void GPIBSocket::commandLoop() {
for (i=0; i<tracelen; i++) {
traceData[i] = commanalyzer_raw_trace_data[i];
}
ds << TQString("ACK");
ds << traceData;
writeEndOfFrame();
}

164
servers/gpib_server_lin/src/scope_functions.cpp
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@ -36,6 +36,7 @@
extern char falpha[1024];
unsigned char scope_raw_screenshot_data[4194304];
double scope_raw_trace_data[65535];
unsigned long scopeScreenWidth (const char * scopeType) {
if (strcmp("HP54600OS", scopeType) == 0) {
@ -478,3 +479,166 @@ int scope_set_channel_position(int desired_channel, float desired_level,const ch
return 1;
}
}
int scope_get_channel_trace(int desired_channel, const char * scopeType, int gpibDevice) {
int max_num_bytes = 0;
char segarray[4194304];
char floatstring[1024];
long array_pointer;
long ai;
long left_char;
long right_char;
// Send request
printf("[INFO] Getting oscilloscope trace for channel %d [Stage 1]\n\r", desired_channel);
if (strcmp("HP54600OS", scopeType) == 0) {
// FIXME
// Not supported (yet)
return -1;
}
else if (strcmp("TDS744AOS", scopeType) == 0) {
// We need to get/parse the preamble, then obtain and adjust the trace data
sprintf(falpha,"DATA:SOURCE CH%d", desired_channel);
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
sprintf(falpha,"DATA:ENCDG RIBINARY");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
sprintf(falpha,"DATA:WIDTH 2");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
sprintf(falpha,"DATA:START 1");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
sprintf(falpha,"DATA:STOP 65535");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
sprintf(falpha,"WFMPRE?");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
// Read response
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Trying to read %i bytes from GPIB device...\n", 65535);
#endif
ai = gpib_read_array(gpibDevice, 65535, segarray);
if (ai == -1) {
return -1;
}
else {
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Read %li bytes from GPIB device\n", ai);
#endif
TQString preamble(segarray);
TQStringList resultPairs = TQStringList::split(";", preamble, FALSE);
// Find/initialize critical data values
double ymult;
double yoffset;
double yposition;
const char* yunits;
double xincr;
double xposition;
const char* xunits;
for (TQStringList::Iterator it = resultPairs.begin(); it != resultPairs.end(); ++it) {
TQString curVal = *it;
if (curVal.startsWith("YMULT ")) {
curVal.replace("YMULT ", "");
ymult = curVal.toDouble();
}
else if (curVal.startsWith("YOFF ")) {
curVal.replace("YOFF ", "");
yoffset = curVal.toDouble();
}
else if (curVal.startsWith("YZERO ")) {
curVal.replace("YZERO ", "");
yposition = curVal.toDouble();
}
else if (curVal.startsWith("YUNIT ")) {
curVal.replace("YUNIT ", "");
yunits = strdup(curVal.ascii());
}
else if (curVal.startsWith("XINCR ")) {
curVal.replace("XINCR ", "");
xincr = curVal.toDouble();
}
else if (curVal.startsWith("XZERO ")) {
curVal.replace("XZERO ", "");
xposition = curVal.toDouble();
}
else if (curVal.startsWith("XUNIT ")) {
curVal.replace("XUNIT ", "");
xunits = strdup(curVal.ascii());
}
}
// Get the curve data now
sprintf(falpha,"CURVE?");
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Writing: %s\n\r", falpha);
#endif
if (gpib_write(gpibDevice, falpha) == 0) {
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Trying to read %i bytes from GPIB device...\n", 65535*2);
#endif
ai = gpib_read_array(gpibDevice, 65535*2, segarray);
if (ai == -1) {
return -1;
}
else {
#ifdef ENABLE_EXTRA_DEBUGGING
printf("[DEBG] Read %li bytes from GPIB device\n", ai);
#endif
// Interpret the results
long pointCount = ai/2;
for (array_pointer=0; array_pointer<pointCount; array_pointer++) {
TQ_INT16 tempvalue;
tempvalue = segarray[(array_pointer*2)+1]; // LSB
tempvalue = tempvalue | (segarray[(array_pointer*2)+0] << 8); // MSB
scope_raw_trace_data[array_pointer] = tempvalue;
scope_raw_trace_data[array_pointer] = scope_raw_trace_data[array_pointer] * ymult;
}
}
}
else {
return -2;
}
}
}
else {
return -2;
}
}
else {
return -2;
}
}
else {
return -2;
}
}
else {
return -2;
}
}
else {
return -2;
}
}
else {
return -2;
}
return array_pointer;
}
}

2
servers/gpib_server_lin/src/scope_functions.h
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@ -21,6 +21,7 @@
*/
extern unsigned char scope_raw_screenshot_data[4194304];
extern double scope_raw_trace_data[65535];
unsigned long scopeScreenSize (const char * scopeType);
unsigned long scopeScreenWidth (const char * scopeType);
@ -35,3 +36,4 @@ int scope_set_channel_state(int desired_channel, int status,const char * scopeTy
int scope_set_trigger_channel(int desired_channel,const char * scopeType, int gpibDevice);
int scope_set_trigger_level(float desired_level,const char * scopeType, int gpibDevice);
int scope_set_channel_position(int desired_channel, float desired_level,const char * scopeType, int gpibDevice);
int scope_get_channel_trace(int desired_channel, const char * scopeType, int gpibDevice);
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